by the year 2015是“by+时间点”构成的介词短语,表示“到……时候”。这一结构通常用于完成时态的句中作时间状语。
(1)by+过去时间点,主语+谓语(过去完成时态)+宾语……
(2)by+现在时间点,主语+谓语(现在完成时态)+宾语……
(3)by+将来时间点,主语+谓语(将来完成时态)+宾语……
(4)9:40 AM
(1)By the time Jack returned home from England,his son had graduated from college.
杰克从英国回到家的时候,他儿子已经大学毕业了。
(2)By next month,Tom will have saved enough to buy a used car.
到下个月,汤姆就会攒够钱买辆二手车了。
多维训练
单句语法填空
(1)We will have learned(learn) 3,000 words by the end of next term.
(2)We had learned(learn) 3,000 words by the end of last term.
(3)When I talked with my grandma on the phone,she sounded weak,but by the time we hung (hang) up,her voice had been full of life.
(4)By now,people have realized(realize) its importance.
14
There is no doubt about it.关于这一点是毫无疑问的。
句型公式:There is no doubt about.../that...
(1)There is no doubt意为“毫无疑问”,后接that从句或about+名词结构。There is doubt意为“……值得怀疑”,后接whether引导的从句或about+名词结构。
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